First, a High Sierra Titan 65L. Comfortable straps and hip belt, adjustable torso, top-loading and accessible via front/side zips too, cinches well, and is structurally sound. Only caveat is it's missing the brain/top lid. Great pack to have around for friends or as a cheap beater! $25 + shipping

Second, a Kelty Redwing 3100c (roughly 50L). Comfortable straps, versatile pockets, and is also carry-on sized! In great condition and is a great crag pack! $25 + shipping.